Order type/PM activity type is not used for service processing

What causes this issue?

You have entered an <DS:DE.AUFART>order type</> and (if applicable) a
<DS:GLOS.3526C2E5AFAB52B9E10000009B38F974>PM activity type</> for the
<DS:GLOS.3578FDB1FCD570FEE10000009B38F984>service product</>. These are
only used for order creation in the <LS>Utilities Industry</> (IS-U)
component. For example:
Generation of orders from the structure list for equipments or
technicallocations
Generation of suborders for compatible units (order hierarchies)
<ZH>The order type and PM activity type are defined in Customizing by
choosing <LS>Work Management</> then <LS>Master data</>. They are not
used for order generation in service processing</>.

How to fix this error?

To find the order type for service products choose <ZH>Strategy group
-> Strategy -> Requirement type -> Requirement class -> Order type</>.
If you want to maintain an order type and PM activity type for service
processing, you must proceed as follows:
Check whether you have specified a strategy group in the material
master for your service product (see MRP screen 3).
In the standard SAP system, strategy group 84 is preset for service
products.
Check the allocations in Customizing in the following order:
<DS:SIMG.SIMG_CFMENUOPP1OPPT>Define strategy group</>
<DS:SIMG.SIMG_CFMENUOPP1OPPS>Define strategy</>
<DS:SIMG.SIMG_CFMENUOLSDOVZH>Define requirement types</>
<DS:SIMG.SIMG_CFMENUOLSDOVZG>Define requirement classes</>
You can also define an PM activity type as a default value:
<DS:SIMG.SIMG_CFMENUOLIAOIO4>Allocate PM activity type</>.
INCLUDE ISU_PENCIL OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.